1227431 has 2 divisors, whose sum is σ = 1227432. Its totient is φ = 1227430.

The previous prime is 1227407. The next prime is 1227437. The reversal of 1227431 is 1347221.

It is a strong prime.

It is an emirp because it is prime and its reverse (1347221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1227431 is a prime.

It is a super-2 number, since 2×1227431² = 3013173719522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1227437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613715 + 613716.

It is an arithmetic number, because the mean of its divisors is an integer number (613716).

2^1227431 is an apocalyptic number.

1227431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1227431 is an equidigital number, since it uses as much as digits as its factorization.

1227431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 20.

The square root of 1227431 is about 1107.8948506063. The cubic root of 1227431 is about 107.0694805957.

The spelling of 1227431 in words is "one million, two hundred twenty-seven thousand, four hundred thirty-one".